TPS65170 - 具有用于外部充电泵的稳压器的 4 通道 LCD 偏置

TPS65170是TI德州仪器公司的一款电流感应放大器、I2C/PMBus监控器产品，TPS65170是具有用于外部充电泵的稳压器的 4 通道 LCD 偏置，本站介绍了TPS65170的封装应用图解、特点和优点、功能等，并给出了与TPS65170相关的TI元器件型号供参考。

TPS65170 - 具有用于外部充电泵的稳压器的 4 通道 LCD 偏置 - 电流感应放大器、I2C/PMBus监控器 - 保护、监控和热插拔 - 德州仪器

产品描述

The TPS65170 provides a simple and economic power supply solution for a wide variety of LCD bias applications.

In typical display panel applications, the boost converter generates the display panel’s source voltage VS, the buck converter generates the system’s logic supply VLOGIC, and the two charge pump controllers regulate the external charge pumps generating the display transistors’ on and off supplies VGH and VGL.

By using external transistors to regulate the charge pump output voltage, power dissipation in the IC is significantly reduced, simplifying PCB thermal design and improving reliability.

The TPS65170 also provides a reset circuit that monitors the buck converter output (VLOGIC) and generates a reset signal for the timing controller during power-up.

A control signal can also be generated to control an external MOSFET isolation switch located between the output of the boost converter and the display panel.

产品特性

8.6V to 14.7V Input Voltage Range
2.8A Boost Converter Switch Current Limit
Boost Converter Output Voltages up to 18.5V
Boost and Buck Converter Short-Circuit Protection
1.5A Buck Converter Switch Current Limit
Fixed 750kHz Switching Frequency for Buck and Boost Converters
Fixed Buck Converter Soft-Start
Programmable Boost Converter Soft-Start
Two Charge Pump Controllers to Regulate VGH and VGL
Control Signal for External High-Side MOSFET Isolation Switch
Reset Signal With Programmable Reset Pulse Duration
Thermal Shutdown
28-Pin 5×5 mm QFN Package
APPLICATIONS
- LCD TVs and Monitors

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